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Uniform MnCo(2)O(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances
In this work, uniform MnCo(2)O(4.5) nanowires (NWs) on stainless steel foil (SSF) were prepared through a facile, cost-efficient, and eco-friendly hydrothermal method at 120 °C with a post-calcination process in air. The microstructure of MnCo(2)O(4.5) samples could be tuned at different hydrotherma...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
RSC
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9417046/ https://www.ncbi.nlm.nih.gov/pubmed/36133467 http://dx.doi.org/10.1039/d1na00271f |
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author | Du, Xuming Sun, Jiale Wu, Runze Bao, Enhui Xu, Chunju Chen, Huiyu |
author_facet | Du, Xuming Sun, Jiale Wu, Runze Bao, Enhui Xu, Chunju Chen, Huiyu |
author_sort | Du, Xuming |
collection | PubMed |
description | In this work, uniform MnCo(2)O(4.5) nanowires (NWs) on stainless steel foil (SSF) were prepared through a facile, cost-efficient, and eco-friendly hydrothermal method at 120 °C with a post-calcination process in air. The microstructure of MnCo(2)O(4.5) samples could be tuned at different hydrothermal temperatures and quasi-cubes (QCs) were obtained in high yield at 150 °C. The MnCo(2)O(4.5) NW powder peeled off from the SSF delivered an outstanding capacity of 248.62 C g(−1) at 1 A g(−1) with a capacity preservation of 179.43 C g(−1) at 8 A g(−1), while the QCs exhibited 177.19 and 111.73 C g(−1), respectively. To assess the possibility of its actual applications, a hybrid supercapacitor (HSC) device has been assembled by utilizing these MnCo(2)O(4.5) NWs (QCs) and activated carbon (AC) as the cathode and anode, respectively. The MnCo(2)O(4.5) NWs//AC HSC delivered a maximum capacity up to 116.95 C g(−1) and extraordinary cycling durability with only 3.56% capacity loss over 5000 cycles. Besides, the MnCo(2)O(4.5) NWs//AC HSC achieved a maximum energy density of 25.41 W h kg(−1) at a power density of 782.08 W kg(−1), and for the QC-based HSC, it showed a lower energy density of 20.54 W h kg(−1) at 843.34 W kg(−1). These remarkable electrochemical properties demonstrate that the porous MnCo(2)O(4.5) NWs and QCs may serve as promising cathodes for advanced hybrid supercapacitors with superior performance, and the present synthetic methodology may be applied to the preparation of other cobalt-based binary metal oxides with excellent electrochemical properties. |
format | Online Article Text |
id | pubmed-9417046 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | RSC |
record_format | MEDLINE/PubMed |
spelling | pubmed-94170462022-09-20 Uniform MnCo(2)O(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances Du, Xuming Sun, Jiale Wu, Runze Bao, Enhui Xu, Chunju Chen, Huiyu Nanoscale Adv Chemistry In this work, uniform MnCo(2)O(4.5) nanowires (NWs) on stainless steel foil (SSF) were prepared through a facile, cost-efficient, and eco-friendly hydrothermal method at 120 °C with a post-calcination process in air. The microstructure of MnCo(2)O(4.5) samples could be tuned at different hydrothermal temperatures and quasi-cubes (QCs) were obtained in high yield at 150 °C. The MnCo(2)O(4.5) NW powder peeled off from the SSF delivered an outstanding capacity of 248.62 C g(−1) at 1 A g(−1) with a capacity preservation of 179.43 C g(−1) at 8 A g(−1), while the QCs exhibited 177.19 and 111.73 C g(−1), respectively. To assess the possibility of its actual applications, a hybrid supercapacitor (HSC) device has been assembled by utilizing these MnCo(2)O(4.5) NWs (QCs) and activated carbon (AC) as the cathode and anode, respectively. The MnCo(2)O(4.5) NWs//AC HSC delivered a maximum capacity up to 116.95 C g(−1) and extraordinary cycling durability with only 3.56% capacity loss over 5000 cycles. Besides, the MnCo(2)O(4.5) NWs//AC HSC achieved a maximum energy density of 25.41 W h kg(−1) at a power density of 782.08 W kg(−1), and for the QC-based HSC, it showed a lower energy density of 20.54 W h kg(−1) at 843.34 W kg(−1). These remarkable electrochemical properties demonstrate that the porous MnCo(2)O(4.5) NWs and QCs may serve as promising cathodes for advanced hybrid supercapacitors with superior performance, and the present synthetic methodology may be applied to the preparation of other cobalt-based binary metal oxides with excellent electrochemical properties. RSC 2021-06-03 /pmc/articles/PMC9417046/ /pubmed/36133467 http://dx.doi.org/10.1039/d1na00271f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Du, Xuming Sun, Jiale Wu, Runze Bao, Enhui Xu, Chunju Chen, Huiyu Uniform MnCo(2)O(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances |
title | Uniform MnCo(2)O(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances |
title_full | Uniform MnCo(2)O(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances |
title_fullStr | Uniform MnCo(2)O(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances |
title_full_unstemmed | Uniform MnCo(2)O(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances |
title_short | Uniform MnCo(2)O(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances |
title_sort | uniform mnco(2)o(4.5) porous nanowires and quasi-cubes for hybrid supercapacitors with excellent electrochemical performances |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9417046/ https://www.ncbi.nlm.nih.gov/pubmed/36133467 http://dx.doi.org/10.1039/d1na00271f |
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